Finding the Third Proportional to 4,921,978 and 7,090,302

Step by Step Solution

1. Step 1: Write the proportion equation
   4,921,978 : 7,090,302 = 7,090,302 : x
2. Step 2: Convert to fraction form
   4,921,978/7,090,302 = 7,090,302/x
3. Step 3: Cross multiply
   4,921,978x = 7,090,302 × 7,090,302
4. Step 4: Simplify right side
   4,921,978x = 50,272,382,451,204
5. Step 5: Solve for x
   x = 50,272,382,451,204/4,921,978
6. Step 6: Final answer
   x = 10,213,857.61